School Grade by Birth Date Calculator (US & UK)
Save on GoogleEnter your child's date of birth and the school year to see the right US grade, the matching UK year and key stage, and the key school dates ahead.
Enter a date of birth to see the school placement.
Academic Placement
Age at Cut-Off
Key School Dates
School Journey
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What Grade Should My Child Be In?
Schools place children by age on a fixed cut-off date, not by the day the school year starts. In most US states the rule is simple: a child must be 5 by the cut-off, commonly September 1, to start Kindergarten that fall. After that, each year adds one grade until Grade 12 at age 17.
England uses a similar rule with a 31 August cut-off. Children start Reception at 4 and move up one Year each September. This calculator applies your chosen cut-off, shows the US grade and the UK year and key stage, and adds the dates for Kindergarten, graduation and GCSEs.
How to Use This Calculator
- Choose your child's date of birth.
- Pick the academic school year, for example 2026-2027.
- Select your cut-off date. September 1 is the default, and August 1, October 1 and December 31 are also available.
- Press Calculate Milestone, or change any field and the result refreshes on its own.
- Read the placement, the age position in class and the key dates, then copy the link or summary.
Mathematical Formula & Calculation Mechanics
Age at cut-off: compare the birth date with the cut-off date in the first calendar year of the school year, counting whole years and months. A birthday on the cut-off date counts as already reached.
US placement: grade = age at cut-off - 5. Age 3 is Preschool, age 4 is Pre-K, age 5 is Kindergarten, ages 6 to 17 are Grades 1 to 12, and age 18 is College Freshman.
UK placement: year = age on 31 August - 4. Age 3 is Nursery, age 4 is Reception, and ages 5 to 17 are Years 1 to 13. Key Stage 1 is Years 1 and 2, Key Stage 2 is Years 3 to 6, Key Stage 3 is Years 7 to 9, Key Stage 4 is Years 10 and 11, and Key Stage 5 is Years 12 and 13.
Key dates: Kindergarten starts in the first school year when the age at cut-off reaches 5. High school graduation is 13 school years after that start, and GCSEs fall at the end of Year 11, 12 school years after Reception begins. Class position uses the months part of the age: 0 to 2 months is among the youngest, and 9 to 11 months is among the oldest.
Step-by-Step Worked Example
Question: A child was born on 14 March 2018. What grade are they in for 2026-2027 with a September 1 cut-off?
Step 1: On 1 September 2026 the child is 8 years and 5 months old.
Step 2: US grade = 8 - 5 = Grade 3, which is elementary school. The age is 5 months into the year, so they are in the middle of the class.
Step 3: On 31 August 2026 the child is 8, so the UK year = 8 - 4 = Year 4, Key Stage 2.
Step 4: Kindergarten began in 2023-2024, high school graduation is expected in 2036, and Year 11 GCSEs fall in 2034.
Comprehensive Reference Table: School Grade by Birth Date (45 Rows)
The table is for the 2026-2027 school year with a September 1, 2026 cut-off. Each age group is split into the oldest, middle and youngest months of the class. A child born exactly on September 1 belongs to the older age group in the US, and to the younger group in England, which uses 31 August.
| Birth Date Range (Month/Year) | Age on Sept 1 | US School Grade Level | UK Key Stage Equivalent | Milestone Academic Skills |
|---|---|---|---|---|
| Sep 2022 - Dec 2022 | 3 yrs 8 mo to 3 yrs 11 mo | Preschool | Nursery (EYFS) | Names colors and shapes, speaks in short sentences, plays beside peers |
| Jan 2023 - Apr 2023 | 3 yrs 4 mo to 3 yrs 8 mo | Preschool | Nursery (EYFS) | Names colors and shapes, speaks in short sentences, plays beside peers |
| May 2023 - Aug 2023 | 3 yrs 0 mo to 3 yrs 4 mo | Preschool | Nursery (EYFS) | Names colors and shapes, speaks in short sentences, plays beside peers |
| Sep 2021 - Dec 2021 | 4 yrs 8 mo to 4 yrs 11 mo | Pre-K | Reception (EYFS) | Recognizes some letters, counts to 10, follows simple routines |
| Jan 2022 - Apr 2022 | 4 yrs 4 mo to 4 yrs 8 mo | Pre-K | Reception (EYFS) | Recognizes some letters, counts to 10, follows simple routines |
| May 2022 - Aug 2022 | 4 yrs 0 mo to 4 yrs 4 mo | Pre-K | Reception (EYFS) | Recognizes some letters, counts to 10, follows simple routines |
| Sep 2020 - Dec 2020 | 5 yrs 8 mo to 5 yrs 11 mo | Kindergarten | Year 1 (KS1) | Knows letter sounds, counts to 100, writes own name |
| Jan 2021 - Apr 2021 | 5 yrs 4 mo to 5 yrs 8 mo | Kindergarten | Year 1 (KS1) | Knows letter sounds, counts to 100, writes own name |
| May 2021 - Aug 2021 | 5 yrs 0 mo to 5 yrs 4 mo | Kindergarten | Year 1 (KS1) | Knows letter sounds, counts to 100, writes own name |
| Sep 2019 - Dec 2019 | 6 yrs 8 mo to 6 yrs 11 mo | Grade 1 | Year 2 (KS1) | Reads simple sentences, adds and subtracts within 20 |
| Jan 2020 - Apr 2020 | 6 yrs 4 mo to 6 yrs 8 mo | Grade 1 | Year 2 (KS1) | Reads simple sentences, adds and subtracts within 20 |
| May 2020 - Aug 2020 | 6 yrs 0 mo to 6 yrs 4 mo | Grade 1 | Year 2 (KS1) | Reads simple sentences, adds and subtracts within 20 |
| Sep 2018 - Dec 2018 | 7 yrs 8 mo to 7 yrs 11 mo | Grade 2 | Year 3 (KS2) | Reads fluently, adds and subtracts within 100, writes short paragraphs |
| Jan 2019 - Apr 2019 | 7 yrs 4 mo to 7 yrs 8 mo | Grade 2 | Year 3 (KS2) | Reads fluently, adds and subtracts within 100, writes short paragraphs |
| May 2019 - Aug 2019 | 7 yrs 0 mo to 7 yrs 4 mo | Grade 2 | Year 3 (KS2) | Reads fluently, adds and subtracts within 100, writes short paragraphs |
| Sep 2017 - Dec 2017 | 8 yrs 8 mo to 8 yrs 11 mo | Grade 3 | Year 4 (KS2) | Multiplication facts, chapter books, first fractions |
| Jan 2018 - Apr 2018 | 8 yrs 4 mo to 8 yrs 8 mo | Grade 3 | Year 4 (KS2) | Multiplication facts, chapter books, first fractions |
| May 2018 - Aug 2018 | 8 yrs 0 mo to 8 yrs 4 mo | Grade 3 | Year 4 (KS2) | Multiplication facts, chapter books, first fractions |
| Sep 2016 - Dec 2016 | 9 yrs 8 mo to 9 yrs 11 mo | Grade 4 | Year 5 (KS2) | Multi-digit multiplication, fractions and decimals, organized writing |
| Jan 2017 - Apr 2017 | 9 yrs 4 mo to 9 yrs 8 mo | Grade 4 | Year 5 (KS2) | Multi-digit multiplication, fractions and decimals, organized writing |
| May 2017 - Aug 2017 | 9 yrs 0 mo to 9 yrs 4 mo | Grade 4 | Year 5 (KS2) | Multi-digit multiplication, fractions and decimals, organized writing |
| Sep 2015 - Dec 2015 | 10 yrs 8 mo to 10 yrs 11 mo | Grade 5 | Year 6 (KS2) | Fraction operations, long division, short research reports |
| Jan 2016 - Apr 2016 | 10 yrs 4 mo to 10 yrs 8 mo | Grade 5 | Year 6 (KS2) | Fraction operations, long division, short research reports |
| May 2016 - Aug 2016 | 10 yrs 0 mo to 10 yrs 4 mo | Grade 5 | Year 6 (KS2) | Fraction operations, long division, short research reports |
| Sep 2014 - Dec 2014 | 11 yrs 8 mo to 11 yrs 11 mo | Grade 6 | Year 7 (KS3) | Ratios, early algebra expressions, argument writing |
| Jan 2015 - Apr 2015 | 11 yrs 4 mo to 11 yrs 8 mo | Grade 6 | Year 7 (KS3) | Ratios, early algebra expressions, argument writing |
| May 2015 - Aug 2015 | 11 yrs 0 mo to 11 yrs 4 mo | Grade 6 | Year 7 (KS3) | Ratios, early algebra expressions, argument writing |
| Sep 2013 - Dec 2013 | 12 yrs 8 mo to 12 yrs 11 mo | Grade 7 | Year 8 (KS3) | Proportions, negative numbers, essays with evidence |
| Jan 2014 - Apr 2014 | 12 yrs 4 mo to 12 yrs 8 mo | Grade 7 | Year 8 (KS3) | Proportions, negative numbers, essays with evidence |
| May 2014 - Aug 2014 | 12 yrs 0 mo to 12 yrs 4 mo | Grade 7 | Year 8 (KS3) | Proportions, negative numbers, essays with evidence |
| Sep 2012 - Dec 2012 | 13 yrs 8 mo to 13 yrs 11 mo | Grade 8 | Year 9 (KS3) | Linear equations, Pythagorean theorem, research writing |
| Jan 2013 - Apr 2013 | 13 yrs 4 mo to 13 yrs 8 mo | Grade 8 | Year 9 (KS3) | Linear equations, Pythagorean theorem, research writing |
| May 2013 - Aug 2013 | 13 yrs 0 mo to 13 yrs 4 mo | Grade 8 | Year 9 (KS3) | Linear equations, Pythagorean theorem, research writing |
| Sep 2011 - Dec 2011 | 14 yrs 8 mo to 14 yrs 11 mo | Grade 9 | Year 10 (KS4) | Algebra I or Geometry, literary analysis, biology |
| Jan 2012 - Apr 2012 | 14 yrs 4 mo to 14 yrs 8 mo | Grade 9 | Year 10 (KS4) | Algebra I or Geometry, literary analysis, biology |
| May 2012 - Aug 2012 | 14 yrs 0 mo to 14 yrs 4 mo | Grade 9 | Year 10 (KS4) | Algebra I or Geometry, literary analysis, biology |
| Sep 2010 - Dec 2010 | 15 yrs 8 mo to 15 yrs 11 mo | Grade 10 | Year 11 (KS4) | Geometry or Algebra II, chemistry, analytical essays, PSAT |
| Jan 2011 - Apr 2011 | 15 yrs 4 mo to 15 yrs 8 mo | Grade 10 | Year 11 (KS4) | Geometry or Algebra II, chemistry, analytical essays, PSAT |
| May 2011 - Aug 2011 | 15 yrs 0 mo to 15 yrs 4 mo | Grade 10 | Year 11 (KS4) | Geometry or Algebra II, chemistry, analytical essays, PSAT |
| Sep 2009 - Dec 2009 | 16 yrs 8 mo to 16 yrs 11 mo | Grade 11 | Year 12 (KS5) | Algebra II or Precalculus, SAT or ACT prep, AP courses |
| Jan 2010 - Apr 2010 | 16 yrs 4 mo to 16 yrs 8 mo | Grade 11 | Year 12 (KS5) | Algebra II or Precalculus, SAT or ACT prep, AP courses |
| May 2010 - Aug 2010 | 16 yrs 0 mo to 16 yrs 4 mo | Grade 11 | Year 12 (KS5) | Algebra II or Precalculus, SAT or ACT prep, AP courses |
| Sep 2008 - Dec 2008 | 17 yrs 8 mo to 17 yrs 11 mo | Grade 12 | Year 13 (KS5) | Calculus or statistics, college applications, graduation |
| Jan 2009 - Apr 2009 | 17 yrs 4 mo to 17 yrs 8 mo | Grade 12 | Year 13 (KS5) | Calculus or statistics, college applications, graduation |
| May 2009 - Aug 2009 | 17 yrs 0 mo to 17 yrs 4 mo | Grade 12 | Year 13 (KS5) | Calculus or statistics, college applications, graduation |
Official School Age Cut-Off & Eligibility Table (US and UK)
| Benchmark | United States | United Kingdom (England) |
|---|---|---|
| Typical age cut-off date | September 1 is common; some states use August 1, October 1 or December 31 | 31 August (England) |
| Age to start school | 5 by the cut-off for Kindergarten; some states allow Pre-K at 4 | 4 by 31 August for Reception; compulsory from the term after the 5th birthday |
| Primary / elementary years | Kindergarten to Grade 5 (ages 5 to 11) | Reception to Year 6 (ages 4 to 11) |
| Middle years | Grades 6 to 8 (ages 11 to 14) | Key Stage 3, Years 7 to 9 (ages 11 to 14) |
| Secondary / high school years | Grades 9 to 12 (ages 14 to 18) | Key Stage 4, Years 10 and 11, then Sixth Form, Years 12 and 13 (ages 14 to 18) |
| Compulsory education ends | Age 16 to 18, depending on the state | Education or training required until age 18; school leaving age is 16 |
| Main exams | SAT or ACT in Grades 11 and 12; no single national exit exam | GCSEs at the end of Year 11; A-levels at the end of Year 13 |
| Grade or year equivalent | Grade 1 is age 6 at the cut-off | Year 2 is age 6, so Year = US Grade + 1 |
Scotland, Wales and Northern Ireland have different rules, and US rules vary by state and district. Confirm your child's placement with the school or the official education authority.
Frequently Asked Questions
| Question | Answer |
|---|---|
| What grade should my child be in? | Find the child's age on the school cut-off date and subtract 5. Age 5 is Kindergarten, age 6 is Grade 1, and age 17 is Grade 12. |
| What is the school cut-off date? | September 1 is the most common date, but it varies by state and district. Some use August 1, October 1 or December 31, so check your local school. |
| Is a UK Year the same as a US grade? | Not by number. Children in the same age group are one number higher in England, so Year 2 matches Grade 1, and Reception is similar to Pre-K. |
| Can a child start school early or late? | Many districts allow early entrance testing or a delayed start, and England allows deferral within the school year. Ask your school about its policy. |
| Why does an 18-year-old show as College Freshman? | At 18 on the cut-off date, most students have finished Grade 12 and begin college or further study, so the tool labels that stage College Freshman. |